Builds and returns the content of the virtual start fodler for a site. The virtual startfolder is an intermediate step between the site-list and actual content. This directory contains the "content" folder which leads to the site's actual content.

Produces the collection content. Builds either the virtual start folder with the virtual content folder in it (and additional files). OR: if we're browsing within the content folder: it gets the content of the target/given folder.